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Yamata

One account. Every market. Any collateral. Yamata is a universal credit architecture for assets whose value depends on future truth.

Videos

Description

Yamata is the universal collateral engine built on Robinhood Chain.

We provide credit and leverage for positions that standard lending markets cannot safely handle.

We are not building another prediction market, another RWA lending pool, or another perp venue. Yamata sits one layer above those products: it turns non-standard positions into productive collateral and managed leverage.

The clearest wedge is prediction-market capital. A prediction position has a live market price, but it eventually resolves to zero or one. Its risk changes as the event approaches resolution, which makes it very different from ordinary collateral. Standard lending markets are not designed for that risk profile, so the capital usually sits idle until the event resolves.

Yamata makes that position useful.

A user can hold a prediction-market position, borrow USDC against it, or loop that exposure while keeping the risk isolated and resolution-aware. As the event gets closer, Yamata reduces effective borrowing power so the protocol is not treating a polarizing outcome token like a normal spot asset.

For Open House, we shipped Yamata on Robinhood Chain through three product surfaces.

1. Loop Markets

Loop Markets lets users borrow and loop against their own prediction-market positions.

A user can take a YES or NO position, deposit it as collateral, borrow USDC, loop back into the same exposure, and repay or release collateral through the app.

This is the main wedge: prediction positions become working capital.

Loop Markets is not just leverage. It is leverage with asset-specific risk. The engine understands that a prediction position resolves, so the UI exposes borrowing power, health, debt, liquidation threshold, live max-LTV decay - live resolution-aware risk.

2. Loop Tokens

Loop Tokens are the consumer-packaged version of the same engine.

Instead of manually borrowing and looping, a user can buy a fungible auto-managed 2x token such as TSLA2x or AMZN2x.

Each Loop Token represents managed leveraged exposure to a tokenized equity. Under the hood, the vault uses tokenized stock collateral, USDC debt, and keeper-managed rebalancing to keep exposure near target leverage. The user does not manage a margin account, funding payments, or manual rebalancing. They buy one token and the engine manages the loop underneath.

This is deliberately different from the prediction-market flow:

  • Loop Markets = the user loops their own unique position.

  • Loop Tokens = the engine packages and manages a loop as a fungible token.

That proves the same collateral engine can support both event-driven positions and continuously priced tokenized equities.

For Open House, the Loop Tokens surface includes live on-chain vaults for:

  • TSLA2x

  • AMZN2x

3. Earn

Earn is the supply side of the system.

Every borrow, loop, and Loop Token needs USDC liquidity on the other side. Yamata lets suppliers deposit USDC into isolated lending markets that fund borrowing activity.

The Earn UI groups those opportunities into two yield legs:

  1. Event-driven yield - lenders earn from demand to borrow and loop against prediction positions. This yield is driven by real-world event conviction: elections, macro, sports, and other outcomes. This is an entirely new yield primitive for the space. 

  2. Equity-leverage yield - lenders fund Loop Token demand, where users want managed 2x exposure to tokenized equities.

Together, this creates a new two-sided market: traders unlock capital and leverage from positions they already hold, while lenders earn USDC yield from that demand.

How the engine works

Yamata combines four core components:

Isolated markets

Each collateral type has its own isolated USDC lending market. Risk from one market does not spill into another.

Oracle-priced collateral

Yamata uses a PriceHub and proof-based oracle architecture to mark supported collateral and feed those marks into the lending engine.

Resolution-aware max-LTV decay. 

For prediction markets, the risk model changes as the market approaches resolution. The effective max-LTV starts at the market's nominal cap while the outcome is uncertain, then decays linearly toward zero as resolution nears - winding borrowing power down before the asset polarizes toward zero or one. The protocol enforces this on every health check and surfaces it to users as "effective LLTV." It is deployed and live; for the Open House demo one featured market runs a compressed decay window so the wind-down is visible on camera. 

Looping. Users can borrow USDC against a position and re-enter the same exposure. Two paths exist: a one-signature flow (the demo default), where the user signs a single leverage request and an off-chain solver executes the collateral and borrow legs on their behalf, keyed to the user's own address; and a manual sequential fallback, where the user confirms each bet, deposit, and borrow step in their wallet.

Keeper-managed leverage rebalancing. Loop Tokens use a keeper to maintain target leverage. When the underlying tokenized stock moves, effective leverage drifts and the keeper rebalances the vault back toward 2×, triggering only when leverage moves outside a target band. The keeper / ops layer is off-chain and driven from an internal ops view, kept separate from the consumer UI so users simply buy and hold the token.

Why Robinhood Chain

Robinhood Chain is an Arbitrum Orbit L2 designed for tokenized financial assets and RWAs. Building here means building natively in the Arbitrum stack: Yamata contributes a credit and leverage primitive to the Arbitrum ecosystem, on the chain purpose-built for the assets that primitive serves.

This ecosystem is a natural home for Yamata.

Prediction markets show the hardest case: assets that resolve to zero or one. Tokenized equities show the Robinhood-native case: continuously priced assets that can support managed leverage.

Yamata connects both through one credit and leverage engine, with USDC as the loan asset and Robinhood Chain as the settlement environment.

What is deployed on Robinhood Chain testnet

The Open House demo is deployed on Robinhood Chain testnet and includes:

  • Yamata credit engine

  • PriceHub oracle infrastructure

  • Test USDC loan asset and in-app faucet

  • Prediction betting contract

  • Wrapped prediction collateral

  • Demo prediction markets

  • TSLA2x vault

  • AMZN2x vault

  • Keeper / rebalancer flow

  • Live frontend

Core protocol contracts

  • Lending Core— https://explorer.testnet.chain.robinhood.com/address/0xf84dA50d098184b2fC6F82a4C9DFdFd31e419069

  • PriceHub (decaying oracle) — https://explorer.testnet.chain.robinhood.com/address/0x7eeC9a95B0a29bF5A0F1658f1f4769466aF3F31d

  • PredictionBetting — https://explorer.testnet.chain.robinhood.com/address/0x4d6b38bC9cd9f1F6ec379a6d97a2e3F0cd14bDf2

  • AdaptiveCurve IRM — https://explorer.testnet.chain.robinhood.com/address/0xAD6D44d86Ec31117e4D293E56B65715f33875AFe

  • WrapperFactory — https://explorer.testnet.chain.robinhood.com/address/0x821fD6CeB7d77eBDd720a1d3b94D1E89321f4870

  • SignedProofVerifier — https://explorer.testnet.chain.robinhood.com/address/0xB9Be8d7B0Bd1581d973c9f9bc2bB97b390414e67

  • PullPriceAdapter — https://explorer.testnet.chain.robinhood.com/address/0x5882Ab7E618f8ec61C417635FC39509fbd1d45A5

  • SafeBatchHelper — https://explorer.testnet.chain.robinhood.com/address/0xa39B4fb8B9a28985Ba85FeBE461e6a4BAA0baC4a

  • TSLA2x leverage vault — https://explorer.testnet.chain.robinhood.com/address/0x84E2D8416031810BBBe87c3aA849aAEae4c1eb27

  • AMZN2x leverage vault — https://explorer.testnet.chain.robinhood.com/address/0x3d299b0C1d644db03406B1531b39DCcc14f30c16

Token contracts

  • MockUSDC (loan/quote token) — https://explorer.testnet.chain.robinhood.com/address/0xc2072AC6de5B44FD50DDfE9b864783EFC8a4eB60

  • MockCTF (outcome tokens, ERC-1155) — https://explorer.testnet.chain.robinhood.com/address/0x7BF8d41Fd3be29B473374b89140Be3A78caA3c0e

  • TSLA2x token (= vault above) — https://explorer.testnet.chain.robinhood.com/address/0x84E2D8416031810BBBe87c3aA849aAEae4c1eb27

  • AMZN2x token (= vault above) — https://explorer.testnet.chain.robinhood.com/address/0x3d299b0C1d644db03406B1531b39DCcc14f30c16

Deployer / admin

  • https://explorer.testnet.chain.robinhood.com/address/0xC46f0Ff65d7d067c05CA45a87e4b92fDC4BDb72d

Deck: https://docsend.com/view/btimhqhwunrg9mjj

What makes Yamata different

Yamata is built for positions that standard lending markets either ignore or treat too simply.

Prediction markets let users trade beliefs, but the positions usually remain idle until resolution. Yamata turns those positions into collateral.

Generic lending markets can lend against liquid tokens, but they are not resolution-aware. Yamata is.

Perps give leverage, but users manage margin, funding, and liquidation pressure. Loop Tokens package leverage into a managed token, with the engine and keeper handling the loop underneath.

RWA and index-token protocols make tokenized assets accessible. Yamata’s focus is different: risk-managed credit and leverage across event-driven positions, prediction collateral, and tokenized equities.

Progress During Hackathon

Robinhood Deployment PriceHub oracle infrastructure Prediction betting contract Wrapped prediction collateral Demo prediction markets TSLA2x vault AMZN2x vault Equity token loop engine Keeper / rebalancer flow Live frontend Test USDC loan asset and in-app faucet

Tech Stack

ReactWeb3EthersSolidityGoNodeNext
Team Leader
BBrendan Mannion
GitHub Link
github

GitHub

https://github.com/brenbittaurus/yamata-robinhood-chain/
Product Category
DeFiInfraOther